Heel-attaching machine



Patented Feb. 7, 1933 UNITED STATES PATENT OFFICE.

JOHN F. STANDISH, OF WINTHBOP, MASSACHUSETTS, A SSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY HEEL-ATTACHING MIACHIN E Application filed October 23, 1980. Serial No. 490,688.

This invention relates to machines for attaching heels to the heel-seats of shoes, it being herein illustrated in connection with an apparatus adapted for securing heels by nails driven from the inside of shoes.

In Letters Patent of the United. States No. 1,545,575, granted July 14, 1925 on an application filed in my name, there is disclosed a heeler of the well-known Alpha type, in which the final or clamping pressure is applied to the work under the power of the machine. An object of the present invention is to obtain such power-application of pressure by a considerablysimplified structure, without sacrifice of effectiveness or convenience of control. For the attainment of this result, I combine with a movable pressure member or abutment which co-operates with work supn ported, as by a ack, and with the operating or driving means for said pressure member, connecting members, shown as plates joined respectively to the pressure and operating means. Movable with one of the connecting members is means, which may be in the form of a roll, for engaging them and thus transmitting the driving effect to the pressure member. With this transmitting means is preferably associated a stop, which may be normally fixed inposition, the transmitting means being yieldably supported for contact with it. The stop not only insures the certain disengagement of the clutch mechanism furnished by the plates and roll, but, by making it variable in position, the length of time of engagement of the clutch and consequently the degree of pressure exerted upon the work by the abutment may be adjusted. With such an organization, besides the clutch small in number, no movable elements are added to the'apparatus to obtain poweractuation and control of the abutment. It is therefore relatively inexpensive, both as to manufacture and maintenance. The structure is further simplified by so arranging the parts that machining operations are eliminated, this regardless of whether or not work-clamping pressure 'under power is emthe illustrated embodiment of the invention,

members and their driving connections, both ployed. The machine-frame is provided, in r with a bore to receive a cylindrical carrier for the pressure member. Preferably, the carrier is tubular, and through it extends the spring used in such machines as the Alpha for returning the pressure-abutment to its normal position at the termination of the heel-attaching operation. To the c linder may be secured one of the plates t rough which the pressure-abutment is actuated.

r In the accompanying drawing illustrating a particular form of my improved machine,

Fig. 1 is a central vertical longitudinal section therethrough; and r Fig. 2 is a similar detail view, enlarged, m of the clutch mechanism.

The frame F is preferably in the form of a hollow standard having cast with it various brackets, cross-bars and bosses to support the elements of the machine. A bracket 10 projecting from the front of the frame has fixed upon its upper horizontal surface a sleeve 12, in which is held a jack-post 14 to support the work for the heeling operation. In the jack-top 16 are vertical passages 18, m in which the heel-attaching nails N are carriedupon the. tops of driver-rods 20. These drivers are secured to the upper end of a plunger 22 held normally down by a spring 24 interposed between it and the jack-top. The drivers are reciprocated, to cause the insertion of the nails, by an actuating plunger 26 movable in alinement with the driverplunger 22 in frame-brackets 28, 28. The contacting portions 30 of the two plungers a may be threaded into the body-portions, to 5 permit the extent of travel of the drivers to be adjusted, this altering the depth to which the heads of the heel-attaching nails are sunk into the heel-seat. Rotatable in the lower extremity of the plunger 26 is a roll 32 engaged 'by a cam 34 fast upon the forward extremity of a horizontal driving shaft 36 j ournaled in bosses 38 near the lower portion of the frame and rotated by power applied to a pulley 40, this power being transmitted to the shaft through clutch mechanism 42. The cam is preferably so designed that a uniform speed is imparted to the drivers 20 during their inserting stroke, this being more effective for clinching nailsuponthe last-plate than the decreasing speed obtained by crank mechanism.

Through cross-bars 50, near the top of the frame F is a vertical bore 52 to receive a cylindrical carrier-slide 54 held normally raised by a spring 55. This bore 52 is the result of a single readily performed machineoperation. To the slide is attached by screws 56 a horizontal arm 58 guided by finished surfaces 57 on the frame, this arm having a bore 59 receiving the cylindrical slide. Adjustable in horizontal ways in this arm is an abutment-slide 60, t irough which pressure is applied to a heel H to be attached to resist the nailing force. In the slide 60 is mounted to yield vertically against a spring 62 a tread contact member 64, andgeared to this at 66 is an inclined contact member 68 in the form of a fork to embrace the rear of the heel operated upon. This capacity for yield of the contact members 64 and 68 equalizes the pressure upon the heel. The slide 54 is actuated to produce preliminary pressure upon the Work, which allows the heel to be positioned and held temporarily upon. the heel-seat of a shoe S, and final pressure, by which said heel is clamped in place for nailing.

For the application of preliminary pressure, there is pivoted to a depending portion '70 of the slide 54 a connecting-rod 7 2, which,

at its lower extremity, is articulated at 74 to a treadle-lever 7 6 near its cente At the rear, the treadle is fulcrumed at 78 upon a weight 80 resting normally upon a cushion 82 and guided for vertical movement by a stud 84 rising from the bottom of the frame. A stopscrevv 85, threaded through a portion of the frame, limits the upward movement of the treadle under the influence of its spring 55. At the upper side of the weight 80 is a bracket 86, to which is pivoted an arm 88 arranged to trip the clutch mechanism 42, causing the connection of the pulley 40 to the shaft 36. The operator, having jacked the shoe S and applied the heel H to its heel-seat, depresses the treadle 76. The weight 89 is of sufficient magnitude to hold the fulcrum-point 7 8 from rising at this time. The treadle therefore turns about this point, drawing down the slide 54, and therefore the pressure-head 60, through the connecting-rod 72. The operator may now determine the correct position of the heel, and then continues the depression of the treadle. The engagement of the contact members 64 and 68 with the heel holds the pivotal connection 74 of the treadle against further downward movement. Consequently, the weight 80 is raised by the treadleconnection 7 8, and the arm 88 trips the clutch mechanism, causing the shaft 36 to perform a complete rotation under the influence of the driving pulley 40.

For the application of the clamping pressure by power furnished by the driving shaft, there is fixed to the portion 70 of the slide 54 an element of a clutch mechanism 0, this being shown in the form of a connectingplate 90, which may carry a hardened portion giving a vertical contact-surface 92. Surrounding and guided by this plate 90 for inde aendent reciprocation is a yoke Mounted upon the yoke at the rear side of the connecting-plate 90 is a co-operating hardened connecting-plate 96 provided with a downwardly and rearwardly inclined surface 98, which thus converges upwardly to ward the plate-surface 92. The clutch mechanism C is completed by an intermediate roll 100 of cylindrical form, the diameter of the cylinder being greater than too minimum space between the contact-surfaces 92 and 98. The roll rests upon cradle formed in the upper extremity of a plunger 102 guider in the yoke and urged upwardly by a spring 104 to transmit the movement of the yoke 94 to the plate 90. Power is applied to the yoke, and therefore to the plate when these are clutched together, by a connecting-rod 106 joined to a depending portion 108 of the yoke, and at its lower end embracing an eccentri 110 secured to the shaft 36. When the rod 106 is drawn down by its eccentric, the surface 98 is forced against the roll 100, pressing this, in turn, against the surface 92, and thus establishing operating engagement between the elements of the clutch G to lower the slide 54 under the power of the i'naehinc, and thereby press the contact members of the head 60 against the heel H upon the jacked shoe 8. At this time, the cam 34 elevates the plungcrs 26 and 22 and with the latter the drivers 20, forcing the supported nails N through the heel-seat of the shoe into the heel and completing its attachment. 1V hen, upon the completion of the nailing operation, the eccentric-rod 106 rises, the yoke-surface 98 travels away from the roll 100, so the clutch is disengaged and the pressure is removed from the work. To insure certain release of the clutch mechanism C, l have associated with the roll 100 a stop-rod 109 mounted in a bracket 111 upon the frame and projecting vertically through an opening in the yoke 94. The lower end of the rod is so situated that the roll strikes it as the yoke ascends. This positively prevents continued clutching engagement of the roll with the surfaces 92 and 98, and frees the head 60 for its return to normal. The yield of the plunger 102 against. the spring 104 allows continued upward movement of the yoke after the roll strikes the stop-bar. By making this rod vertically adjustable, it may be on sed to control the degree of final pressure. For this purpose, it is shown as threaded into its br cket and fixed in place againstaccidental rotation by a lock-nut 112. By lowering the rod so it is in contact with the roll 100 before the yoke 94 has reached its maximum height, the clutching together of the plates 90 and 96 Y60 and the pressure applied thereby will be less' The maximum pressure is, of course,

made available whenthe roll becomes efi'ective immediately upon initiation of the downward movement of the yoke. The previously mentioned spring elevates the pressurehead to its normal positionaf-ter therelease of the clutch C. This spring is conveniently housed within the slide 54, which is made tubular for this purpose, and is' joined to an eye 116 at the top of the plate and to a hook 118 depending from a. cap 120 situated upon the upper bar 50 above the bore 52. The shank of the hook is threaded and is adjustable vertically by nuts 122 resting upon the cap, this allowing a variation in the sliderestoring tension of the spring. The cap 120 not only supports the-hook 118, but alsosubstantially closes the bore 52, preventing the entrance of dirt into thebearings beneath.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is;

1. In a heel-attaching machine, a shoe-support, a movable pressure member co-operating therewith, operating-means, co-operating connecting members joined respectively to the pressure member and operating means, and means movable with one of the members and arranged to engage them to transmit the effect of the operatingmeans to the pressure member.

2. In a heel-attaching machine, a shoe-support, a movable pressure member co-operat ng therewith, operating means, co-operatlng clutch-plates joined respectively to the pressure member and operating means, andv a connecting member situated between the plates.

3. In a heel-attaching machine, a shoe-support, a movable pressure member co-operating therewith, operating means, co-operating plates joined respectively to the pressure member and operating means, a connecting member situated between the :plates, and a yieldable support for the connecting member.

a 4. In a heel-attaching machine, a shoe-support, a pressure member co-operating therewith, a movable carrier for said member, a driving shaft, co -operating clutch members connected respectively to the carrier and driving shaft, and a clutch member arranged for contact with both of said co-operating clutch members. I

5. Ina heel-attaching machine, a shoe-support, a pressure member co-operating therewith, a movable carrier for said member, a

driving shaft, co-operating clutch members connected respectively to the carrier and driving shatt',aclutch member arranged for contact with both of said co-operating'clutch members, and a 'yieldable support for the intermediate clutch member movable with one of the associated clutch members.

6. In a heel-attaching machine, a shoe-support, a movable pressure member co-operating therewith, operatingmeans, co-operating connecting members oined respectively to the pressure member-and operating means,means 'movable with one of the members and arranged to engage them to transmit the effect of the operating means to the pressure member, and a normally stationary member contacting with. the transmitting means and arranged to disengage it from the connecting members.

7 In a heel-attaching machine, a shoe-support, a movable pressure member co-operating therewith, operating means, co-operating connecting members joined respectively to the pressure'member and operating means, means movable with one of the members and arranged to engage them to transmit the effect of the operatingmeans to the pressure member, a normally stationary member contacting with the transmitting means and ar ranged to disengage it from the connecting members, and means arranged to vary the time of engagement between the disengaging member and the transmitting means.

I 8. In a heel-attaching machine, a shoe-support, a pressure member co-operating therewith, a movable carrier for said member, a driving shaft, co-operating clutch members connected respectively to the carrier and driving sha ft, an intermediate clutch member, and a stop with which the intermediate clutch member contacts.

9. In a heel-attaching machine,a shoe-sup port, a pressure member co-operating therewith, a movable carrier for said member, a driving shaft, co-operating clutch members connected respectively to the carrier and driving shaft, an intermediate clutch memher, a yieldable support for the intermediate clutch member movable with one of the associated clutch members,- and a normally fixed stop contacting with the member to cause the support to yield. I

10. In a heel-attaching machine, a shoesupport, a pressure member (Io-operating therewith, a movable carrier for said member, a driving shaft, co-operating' clutch members connected respectively to the carrier and driving shaft, an intermediate clutch member, a stop with which the intermediate clutch member contacts, and a mounting arranged to fix the stop in different contact-positions.

11. The combination with a frame, of a jack, a pressure-head co-operating with the jack, a carrier for the pressure-head movable upon the frame, a driving shaft journaled in the frame, a connecting-rod movable by the shaft, co-operating plates movable respectively with the connecting-rod and carrier, the adjacent surfaces of the plates converging, and a roll situated between the plates for contact with the converging surfaces.

12. The combination with a frame, of a jack, a pressure-head co-operating with the jack, a carrier for the pressure-head movable upon the frame, a driving shaft j ournaled in the frame, a connecting-rod movable by the shaft, co-operating plates movable respectively with the connecting-rod and carrier, the adjacent surfaces of the plates converging, a roll situated between the plates for contact with the converging surfaces, and a stop mounted upon the frame for engagement by the roll.

13. The combination with a frame, of a jack, a pressure-head co-operating with the jack, a carrier for the pressure-head movable upon the frame, a driving shaft journaled in the frame, a connecting-rod movable by the shaft, co-operating plates movable respectively with the connecting-rod and carrier, the adjacent surfaces of the plates converging, a roll situated between the plates for contact with the converging surfaces, at stop mounted upon the frame for engagement by the roll, and means arranged to vary the position of the stop toward and from the roll.

14. The combination with a frame, of a jack, a pressure-head co-operating with the jack, a carrier for the pressure-head movable upon the frame, a driving shaft ournaled in the frame, a connecting-rod movable by the shaft, co-operating plates movable respec tively with the connecting-rod and carrier, the adjacent surfaces of the plates converging, a roll situated between the plates for contact with the converging surfaces, and a yieldablesupport for the roll movable with one of the plates.

15. The combination with a frame, of a jack, a slide mounted to reciprocate upon the frame, a pressure-abutment carried by the slide for co-operation with the ack, a plate movable with the slide, a driving shaft j ourn aled in the frame, a connecting-rod actuated by the driving shaft, a yoke joined to the connecting-rod, said yoke co-operating with the plate and having a contact-plate, and a connecting-roll carried by the yoke for engagement with the plates.

16. The combination with a frame, of a jack, a slide mounted to reciprocate upon the frame, a pressure-abutment carried by the slide for co-operation with the jack, a plate fixed to the slide, a driving shaft journaled in the frame, a connecting-rod actuated by the driving shaft, a yoke joined to the connecting-rod, said yoke being guided by the plate and having an inclined surface, and a connecting-roll for engagement with the plate and inclined surface of the yoke.

17 The combination with a frame, of a jack, a slide mounted to reciprocate upon the frame,- a pressure-abutment carried by the slide for co-operation with the jack, a plate movable with the slide, a driving shaft ournaled in the frame, a connecting-rod actuated by the driving shaft, a yoke joined to the connecting-rod, said yoke co-operating with the plate and having a contact-plate, a connecting-roll carried by the yoke for engagement with the plates, and a stop mounted upon the frame for contact with the roll.

18. The combination with a frame, of a jack, a slide mounted to reciprocate upon the frame, a pressure-abutment carried by the slide for co-operation with the jack, a plate movable with the slide, a driving shaft journaled in the frame, a connecting-rod actuated by the driving shaft, a yoke joined to the connecting-rod, said yoke co-operating with the plate and having a contact-plate, a plunger yieldable upon the yoke, and a roll resting upon the plunger for engagement with the plates.

19. The combination with a frame, of a jack, a slide mounted to reciprocate upon the frame, a pressure-abutment carried by the slide for co-operation with the jack, a plate movable with the slide, a driving shaft journaled in the frame, a connecting-rod actuated by the driving shaft, a yoke joined to the connecting-rod, said yoke co-operating with the plate and having a contact-plate, a plunger yieldable upon the yoke, a roll resting upon the plunger for engagement with the plates, and a rod adjustable upon the frame and arranged for engagement with the roll in the movement of the yoke.

20. The combination with a frame provided with a bore, of a jack mounted upon the frame, a tubular carrier movable in the bore,

a pressure-head mounted upon the carrier and co-operating with the jack, a spring oining the carrier to the frame and extending through the carrier tube, and means for moving the carrier-tube.

21. In a heel-attaching machine, the combination with a frame provided with a bore, of a jack mounted upon the frame, a cylindrical carrier movable in the bore, a pressureabutment mounted upon the carrier and cooperating with the jack, a clutch-plate secured to the carrier-cylinder, and clutch means for the pressure-abutment movable under the power of the machine and co-operating with the plate.

22. In a heel-attaching machine, the combination with a frame provided with a bore, of a jack mounted upon the frame, a cylindrical carrier movable in the bore, a pressureabutment mounted upon the carrier and cooperating with the ack, a plate secured to the carrier-cylinder, operating means for the pressure-abutment movable under the power of the machine and co-operating with the plate, a treadle movable upon the frame, and

a connecting-rod pivoted to the treadle and to the carrier-cylinder.

23. The combination with a frame provided with a bore, of a jack mounted upon the frame, a tubular carrier movable in the bore, a pressure-head mounted upon the carrier and co-operating with the jack, a cap carried upon the frameabove the bore, a spring joining the carrier to the cap and extending through the carrier tube, and means for moving the carrier-tube.

In testimony whereof I have signed my name to this specification.

JOHN F. STANDISH. 

